Electroacoustic Performance Standards: Recommendations That the speech signal meet or exceed a Speech Transmission Index (STI) of .84, measured at the earphones....
Search Results "STI: Speech Transmission Index"
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EXECUTIVE SUMMARY
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8.1 Objective
Minimally acceptable Speech Transmission Index (STI) level, 3. Minimally acceptable signal-to-noise ratio for internally generated noise, and 4....
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8.2.2 Stimuli
Speech Transmission Index (STI) measurements were made immediately following the recording of each sentence pair at each microphone location....
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8.3 Results and Discussion
8.3 Results and Discussion Figure 24 shows the range of preferred listening levels selected by the listeners who participated in this study. The highest level of 111 dB SPL was...
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8.4 Recommendations
The speech transmission index cannot be less than .84. 3. The signal-to-noise ratio for internally generated noise cannot be less than 18 dB. 4....